Re: [RFC][PATCH] send-email: add --[no-]xmailer option

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On Dec 2, 2014, at 18:34, Eric Wong wrote:

Luis Henriques <henrix@xxxxxxxxxxxx> wrote:
On Mon, Mar 24, 2014 at 09:38:27PM +0000, Luis Henriques wrote:
Add --[no-]xmailer that allows a user to disable adding the 'X- Mailer:'
header to the email being sent.


Ping

It's been a while since I sent this patch.  Is there any interest in
having this switch in git-send-email?

I wasn't paying attention when the original was sent, but this
looks good to me.

Acked-by: Eric Wong <normalperson@xxxxxxxx>

I honestly don't like disclosing too much information about my system,
in this case which MUA I'm using and its version.

Right on.  I would even favor this being the default.

I fully agree with you.

Auto-generated Message-Id headers also shows the use of git-send- email;
perhaps there can be a way to configure that, too.  However,
git-send-email respects manually-added Message-Id headers in the
original patch, so it's less of a problem, I suppose.

It can be hashed like so to avoid leaking information:

diff --git a/git-send-email.orig b/git-send-email.new
index f3d75e8..d0b4bff 100755
--- a/git-send-email.orig
+++ b/git-send-email.new
@@ -27,6 +27,7 @@ use Data::Dumper;
 use Term::ANSIColor;
 use File::Temp qw/ tempdir tempfile /;
 use File::Spec::Functions qw(catfile);
+use Digest::MD5 qw(md5_hex);
 use Error qw(:try);
 use Git;

@@ -901,8 +903,10 @@ sub make_message_id {
 		require Sys::Hostname;
 		$du_part = 'user@' . Sys::Hostname::hostname();
 	}
-	my $message_id_template = "<%s-git-send-email-%s>";
+	my $message_id_template = "%s-git-send-email-%s";
 	$message_id = sprintf($message_id_template, $uniq, $du_part);
+	@_ = split /@/, $message_id;
+ $message_id = '<'.substr(md5_hex($_[0]), 0,31).'@'.substr(md5_hex($_[1]),1,31).'>';
 	#print "new message id = $message_id\n"; # Was useful for debugging
 }

---

--Kyle
--
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